<template>
    <el-container class="home-container">
        <el-header>
            <div>
                <img src="../assets/logo.png"/>
                <span>后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <el-container>
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleClapse">{{ optionInfo }}</div>
                <el-menu
                    background-color="#333744"
                    text-color="#fff"
                    active-text-color="#ffd04b"
                    router
                    unique-opened
                    :collapse="isCollapse"
                    :collapse-transition="false">

                    <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
                        <template slot="title">
                            <i class="el-icon-location"></i>
                            <span>{{ item.name }}</span>
                        </template>
                        <el-menu-item
                            :index="subMenu.url+''"
                            v-for="subMenu in item.children"
                            :key="subMenu.id">

                            <template slot="title">
                                <i class="el-icon-location"></i>
                                <span>{{ subMenu.name }}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>


                </el-menu>


            </el-aside>
            <el-main>

                <router-view v-if="isRouterAlive"/>

            </el-main>
        </el-container>
    </el-container>
</template>


<script>
export default {
    data() {
        return {
            menuList: [
                /*{
                    id: 1,
                    name: "用户管理",
                    children: [{id: 2, name: "用户列表", url: "/employee"}]
                },*/
            ],
            isCollapse: false,
            isRouterAlive: true,
            optionInfo: 'close'
        };
    },
    methods: {
        reload() {
            this.isRouterAlive = false;
            this.$nextTick(function () {
                this.isRouterAlive = true;
            });
        },
        toggleClapse() {
            this.isCollapse = !this.isCollapse;
            if (this.optionInfo == 'close') {
                this.optionInfo = 'open'
            } else {
                this.optionInfo = 'close'
            }
        },
        logout() {
            window.sessionStorage.clear();
            this.$router.push("/");
        },
        loadMenus() {
            let userName = sessionStorage.getItem("loginName");
            let url = "/api/getMenu"

            this.$axios.get(url, {
                params: {
                    userName: userName
                }
            }).then(response => {

                if(response.data.status == 200){
                    // 把查到的数据，给到menuList
                    this.menuList = response.data.data;
                }else {
                    this.$message({
                        type: "error",
                        message: "菜单加载错误",
                        duration: 1000
                    })
                }
            })
        }
    },
    created() {
        this.loadMenus();
    }
};
</script>

<style lang="less" scoped>

img {
    width: 30px;
    height: 30px;
}

.toggle-button {
    padding: 5px 0;
    background-color: #373d48;
    font-size: 10px;
    text-align: center;
    color: #fff;
    letter-spacing: 0.2em;
    cursor: pointer;
}

.el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 22px;

    > div {
        display: flex;
        align-items: center;

        span {
            margin-left: 14px;
        }
    }
}

.el-aside {
    background-color: #333744;

    .el-menu {
        border-right: 0;
    }
}

.el-main {
    background-color: #eaedf1;
}

.home-container {
    height: 100%;
}

/*.el-submenu__title {
    padding-left: 0;
}*/


</style>
